Question

A train 125 m long passes a man, running at 5 km/hr in the same direction in which the train is going, in 10 seconds. The speed of the train is ?

A) 45 kmph B) 25 kmph C) 30 kmph D) 50 kmph

Answer 1

Answer:

Speed of the train relative to man = (125/10) m/sec = (25/2) m/sec.

[(25/2) x (18/5)] km/hr = 45 km/hr.

Let the speed of the train be 'S' km/hr.

Then, relative speed = (S - 5) km/hr.

S - 5 = 45 => S = 50 km/hr.

so your correct answer is option (d)